UnicodeCharactercom
𝑰
U+1D470 · MATHEMATICAL BOLD ITALIC CAPITAL I

Mathematical Bold Italic Capital I

  • CodepointU+1D470
  • NameMATHEMATICAL BOLD ITALIC CAPITAL I
  • Decimal119920
  • BlockMathematical Alphanumeric Symbols (U+1D400–U+1D7FF)
  • Plane1 — Supplementary Multilingual Plane
  • ScriptCommon
  • CategoryLu — Uppercase Letter
  • Unicode version3.1 (2001)
  • Bidi classL — Left-to-Right
  • Combining class0
  • East Asian widthN — Neutral
  • MirroredNo

About this character

U+1D470 (𝑰) is MATHEMATICAL BOLD ITALIC CAPITAL I, an uppercase letter in the Mathematical Alphanumeric Symbols block. Its script is Common: it is shared by many writing systems rather than belonging to one. It was added in Unicode 3.1 (2001).

It is a font variant of U+0049 I (compatibility decomposition <font>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+0049 I. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

How to type 𝑰

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Encodings & escapes

UTF-8 encoder →
UTF-8F0 9D 91 B04 bytes
UTF-16D835 DC70surrogate pair
UTF-320001D4704 bytes
HTML decimal&#119920;
HTML hex&#x1D470;
CSS\1D470in content: "…"
JavaScript\u{1D470}ES2015+
JavaScript\uD835\uDC70surrogate pair
JSON\uD835\uDC70
Python\U0001D470
Python\N{MATHEMATICAL BOLD ITALIC CAPITAL I}by name
Java / C#\uD835\uDC70
C / C++\U0001D470universal character name
Rust / Swift / PHP\u{1D470}
Go\U0001D470
Ruby\u{1D470}
Excel / Sheets=UNICHAR(119920)
URL-encoded%F0%9D%91%B0percent-encoded UTF-8
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Normalization forms

Normalizer →
NFCunchanged
NFDunchanged
NFKCU+0049 I
NFKDU+0049 I
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Looks similar

Characters that Unicode’s security data (UTS #39 confusables) lists as visually confusable with this one. Useful for spotting lookalike spoofing in URLs and usernames.

U+00311Digit One U+0049ILatin Capital Letter I U+006ClLatin Small Letter L U+007C|Vertical Line U+0196ƖLatin Capital Letter Iota U+01C0ǀLatin Letter Dental Click U+0399ΙGreek Capital Letter Iota U+0406ІCyrillic Capital Letter Byelorussian-Ukrainian I U+04C0ӀCyrillic Letter Palochka U+05C0׀Hebrew Punctuation Paseq U+05D5וHebrew Letter Vav U+05DFןHebrew Letter Final Nun U+0627اArabic Letter Alef U+0661١Arabic-Indic Digit One U+06F1۱Extended Arabic-Indic Digit One U+16C1ᛁRunic Letter Isaz Is Iss I
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Nearby in Mathematical Alphanumeric Symbols

All in block →
U+1D46A𝑪Mathematical Bold Italic Capital C U+1D46B𝑫Mathematical Bold Italic Capital D U+1D46C𝑬Mathematical Bold Italic Capital E U+1D46D𝑭Mathematical Bold Italic Capital F U+1D46E𝑮Mathematical Bold Italic Capital G U+1D46F𝑯Mathematical Bold Italic Capital H U+1D471𝑱Mathematical Bold Italic Capital J U+1D472𝑲Mathematical Bold Italic Capital K U+1D473𝑳Mathematical Bold Italic Capital L U+1D474𝑴Mathematical Bold Italic Capital M U+1D475𝑵Mathematical Bold Italic Capital N U+1D476𝑶Mathematical Bold Italic Capital O